DE3008021C2 - - Google Patents

Info

Publication number
DE3008021C2
DE3008021C2 DE3008021A DE3008021A DE3008021C2 DE 3008021 C2 DE3008021 C2 DE 3008021C2 DE 3008021 A DE3008021 A DE 3008021A DE 3008021 A DE3008021 A DE 3008021A DE 3008021 C2 DE3008021 C2 DE 3008021C2
Authority
DE
Germany
Prior art keywords
magnetic
weight
component
magnetic layer
carbon atoms
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE3008021A
Other languages
German (de)
English (en)
Other versions
DE3008021A1 (de
Inventor
Takeshi Kyoto Jp Matsuura
Seiji Takatsuki Osaka Jp Watatani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maxell Ltd
Original Assignee
Hitachi Maxell Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Publication of DE3008021A1 publication Critical patent/DE3008021A1/de
Application granted granted Critical
Publication of DE3008021C2 publication Critical patent/DE3008021C2/de
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/71—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the lubricant
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Lubricants (AREA)
DE19803008021 1979-03-03 1980-03-01 Magnetisches aufzeichnungsmedium Granted DE3008021A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2496579A JPS55117739A (en) 1979-03-03 1979-03-03 Magnetic recording medium

Publications (2)

Publication Number Publication Date
DE3008021A1 DE3008021A1 (de) 1980-09-11
DE3008021C2 true DE3008021C2 (enrdf_load_stackoverflow) 1989-10-12

Family

ID=12152678

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19803008021 Granted DE3008021A1 (de) 1979-03-03 1980-03-01 Magnetisches aufzeichnungsmedium

Country Status (3)

Country Link
US (1) US4322474A (enrdf_load_stackoverflow)
JP (1) JPS55117739A (enrdf_load_stackoverflow)
DE (1) DE3008021A1 (enrdf_load_stackoverflow)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5774828A (en) * 1980-10-24 1982-05-11 Fuji Photo Film Co Ltd Magnetic recording medium
JPS57130233A (en) * 1981-02-04 1982-08-12 Fuji Photo Film Co Ltd Magnetic recording medium
JPS57162128A (en) * 1981-03-31 1982-10-05 Fuji Photo Film Co Ltd Magnetic recording body
JPS57179946A (en) * 1981-04-28 1982-11-05 Fuji Photo Film Co Ltd Magnetic recording medium
JPS57179945A (en) * 1981-04-28 1982-11-05 Fuji Photo Film Co Ltd Magnetic recording medium
JPS57208637A (en) * 1981-06-19 1982-12-21 Tdk Corp Magnetic recording medium
JPS59144047A (ja) * 1983-02-07 1984-08-17 Fuji Photo Film Co Ltd 磁気記録媒体
JPS59195320A (ja) * 1983-04-21 1984-11-06 Fuji Photo Film Co Ltd 磁気記録媒体
DE3347531A1 (de) * 1983-12-30 1985-07-11 Basf Ag, 6700 Ludwigshafen Magnetische aufzeichnungstraeger
DE3347532A1 (de) * 1983-12-30 1985-07-11 Basf Ag, 6700 Ludwigshafen Magnetische aufzeichnungstraeger
JPS60261024A (ja) * 1984-06-07 1985-12-24 Victor Co Of Japan Ltd 磁気記録媒体
JPS61204832A (ja) * 1985-03-06 1986-09-10 Matsushita Electric Ind Co Ltd 磁気記録媒体
JPS61278017A (ja) * 1985-06-03 1986-12-08 Matsushita Electric Ind Co Ltd 磁気記録媒体
US4741850A (en) * 1986-10-31 1988-05-03 Hitachi Metals, Ltd. Super paramagnetic fluids and methods of making super paramagnetic fluids
US4701276A (en) * 1986-10-31 1987-10-20 Hitachi Metals, Ltd. Super paramagnetic fluids and methods of making super paramagnetic fluids
US4855079A (en) * 1986-10-31 1989-08-08 Hitachi Metals, Ltd. Super paramagnetic fluids and methods of making super paramagnetic fluids
JPS63164017A (ja) * 1986-12-26 1988-07-07 Kao Corp 磁気記録媒体
SE8800394L (sv) * 1988-02-08 1989-08-09 Skf Nova Ab Superparamagnetiska vaetskor

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1271189C2 (de) * 1964-12-05 1973-09-06 Sony Corp Schichtmagnetogrammtraeger
US3634253A (en) * 1966-10-24 1972-01-11 Fuji Photo Film Co Ltd Magnetic recording medium
US3833412A (en) * 1967-08-24 1974-09-03 Fuji Photo Film Co Ltd Magnetic recording medium
US4091143A (en) * 1973-01-02 1978-05-23 Basf Aktiengesellschaft Magnetic recording media
CA1028208A (en) * 1973-10-05 1978-03-21 Basf Aktiengesellschaft Coated magnetic recording media
JPS5729769B2 (enrdf_load_stackoverflow) * 1974-02-15 1982-06-24
JPS5843815B2 (ja) * 1975-10-23 1983-09-29 富士写真フイルム株式会社 ジキキロクテ−プ
NL7704183A (nl) * 1977-04-18 1978-10-20 Philips Nv Magnetisch registreermedium waarin als disper- geermiddel een n-acylsarcosine derivaat wordt toegepast.
JPS6028052B2 (ja) * 1977-06-01 1985-07-02 ソニー株式会社 磁気記録媒体
JPS6035733B2 (ja) * 1977-09-19 1985-08-16 富士写真フイルム株式会社 磁気記録体
JPS582414B2 (ja) * 1978-04-24 1983-01-17 日本ビクター株式会社 磁気記録媒体

Also Published As

Publication number Publication date
US4322474A (en) 1982-03-30
JPS55117739A (en) 1980-09-10
DE3008021A1 (de) 1980-09-11

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8128 New person/name/address of the agent

Representative=s name: SCHOENWALD, K., DR.-ING. VON KREISLER, A., DIPL.-C

D2 Grant after examination
8363 Opposition against the patent
8331 Complete revocation